31.After the Civil War began, Lincoln's efforts to _________the slavery
issue proved futile.
(A)confuse
(B)compose
(C)defuse
(D)impose
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統計: A(4), B(15), C(36), D(28), E(0) #678516
統計: A(4), B(15), C(36), D(28), E(0) #678516